摘要
以六氯环三磷腈(M1)与硅烷偶联剂KH-550(M2)为原料,通过溶液聚合的方法合成了一种含集氮、硅、磷阻燃元素为一体的阻燃剂(NSiP),利用红外光谱和元素分析对NSiP的结构进行了表征,研究了反应温度、反应时间、投料比对NSiP产率的影响。结果表明,在3432 cm-1处出现M1的P—Cl键与硅烷偶联剂M2中的—NH2反应生成的—NH—键的振动吸收峰,证明所合成的阻燃剂为所要制得的阻燃剂(NSiP)。通过元素分析得到NSiP的C、N、O、Si、P含量实测值和理论值误差均在1%以内,NSiP理论结构和实际结构一致。在最佳合成条件下(M2与M1物质的量比6∶1,60℃反应6 h),NSiP的产率为43.04%。将NSiP与硼酸锌(ZB)复配应用在HDPE/EVA复合材料中,阻燃性能得到提高,垂直燃烧等级达到V-0级,极限氧指数达到30.2%,但是力学性能有所下降。该复合材料的热稳定性能增加,残炭量与HDPE/EVA复合材料相比增加到22.18%。
A flame retardant containing nitrogen,silicon and phosphorus(NSiP)was synthesized by solution polymerization from hexachlorocyclotriphosphazene(M1)and silane coupling agent KH-550(M2).The structure of NSiP was characterized by infrared spectroscopy and elemental analysis.The effects of reaction temperature,reaction time and feed ratio on the yield of NSiP were studied.The results showed that the vibration absorption peak of—NH—bond formed by the reaction of P—Cl bond of M1 with—NH2 in silane coupling agent M2 appeared at 3432 cm-1,which proved that the synthesized flame retardant was the flame retardant(NSiP).The error between the measured and theoretical values of C,N,O,Si and P contents of NSiP are less than 1%,and the theoretical structure of NSiP is consistent with the actual structure.Under the optimum synthesis conditions(molar ratio of M2 to M1 of 6∶1,reaction at 60℃for 6 h),the yield of NSIP was 43.04%.When NSiP and zinc borate(ZB)were applied to HDPE/EVA composites,the flame retardant performance was improved.The vertical combustion grade reached V-0,and the limiting oxygen index reached 30.2%.But the mechanical properties decreased,while the thermal stability of the composites increased,and the carbon residue increased to 22.18%compared with HDPE/EVA composites.
作者
范志勇
夏英
高媛美
吴欣怡
郝建华
FAN Zhiyong;XIA Ying;GAO Yuanmei;WU Xinyi;HAO Jianhua(School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China)
出处
《大连工业大学学报》
CAS
北大核心
2021年第6期438-442,共5页
Journal of Dalian Polytechnic University
基金
辽宁省教育厅A类项目(2017J006).
